JP2019119090A - Production management device of corrugator - Google Patents

Abstract

To provide a production management device of a corrugator capable of ensuring effective traceability.SOLUTION: In the production management device of the corrugator: traceability management control means for managing and controlling traceability information of an operation state and/or a base paper state of each device obtains detection data of a detector of each device; calculates a cumulative cut number and a cut length of a corrugated cardboard sheet; associates the cumulative cut number with a predetermined timing to be obtained, the detection data detected by a predetermined detector and a value of a distance; calculates a cumulative cut number of the corrugated cardboard sheet as a specific cumulative cut number at a position where a sum of the cut lengths exceeds the distance on an upstream side relative to a position of the cumulative cut number on the basis of the cumulative cut number, an actual value of the cut length and the distance; and displays a relationship between the specific cumulative cut number and the detection data as a traceability graph.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a production control device for a corrugator, and more particularly to a production control device for a corrugator capable of ensuring more effective traceability capable of referring to production information of a product sheet after production.

  In the past, corrugated sheets produced by corrugators are required to have a high level of quality control. Then, in order to realize quality control at a high level, it is required to secure so-called traceability, which makes it possible to inquire various production information in the process of manufacturing a corrugated cardboard sheet by a corrugator.

  The corrugated sheet manufacturing apparatus of patent document 1 is conventionally known for the purpose of satisfy | filling such a request. In this corrugated cardboard sheet manufacturing apparatus, a printing device is disposed between the double facer and the cutter device, and the printing device prints individual identification information on each corrugated cardboard sheet cut by the downstream cutter device. ing. The individual identification information to be printed is a serial number, a bar code or the like, which is associated with production information such as a machine operation speed of each device such as a single facer. Therefore, in this cardboard sheet manufacturing apparatus, the user can trace the production information by reading the serial number and the bar code of each cardboard sheet. In particular, it is useful for the end user who uses the "cardboard" in that the production information of the cardboard can be immediately queried when there is a problem or the like.

  Further, for example, a corrugator defect management device of Patent Document 2 is known. This Corrugator's defect management device comprises a defect detection device for detecting a defective corrugated cardboard sheet, and a storage device for storing incidental information including information on the type of defect and the date and time of occurrence of the defect when the defective product is detected. And defect information providing means for making the user recognizable by printing or displaying the stored incidental information. Then, the defect information providing means allows the user to trace incidental information on the defective product.

JP, 2017-001265, A Patent No. 4996173

  However, in the corrugated sheet manufacturing apparatus of Patent Document 1 described above, the individual identification information is printed on each corrugated sheet, so for example, in the corrugated sheet manufacturing plant, the production information of stacked corrugated sheets is inquired If necessary, it is difficult to take out one cardboard sheet from the inside and to read individual identification information. In addition, the cost of providing a printing apparatus for printing individual identification information is also high.

  Further, in the defect management device of the corrugator of Patent Document 2 described above, incidental information (defect information) is stored only for the defects detected by the defect detection device, and is provided to the user. If a defective product that can not be detected by the defect detection device for any reason is found in the stacked cardboard sheets, it is impossible to inquire information at the time of production of a predetermined production order including the cardboard sheets It is also impossible to estimate the range in which defective products other than the found defective products are included.

  Therefore, the present invention has been made to solve the above-mentioned problems of the prior art, and it is possible to refer to the production information of the product sheet after the production is finished without the need to provide the corrugator with a special device such as a printing device. The purpose is to provide a corrugator production control device that can ensure more effective traceability.

  In order to achieve the above object, the present invention is a production control device for a corrugator, the corrugator having a cutter device and a plurality of devices provided on the upstream side of the cutter device. Corrugator production control means for controlling the production of corrugated cardboard sheets, traceability control means for controlling and controlling the traceability information of the operation state of each device of the corrugator and / or the state of the base paper in each device, and storage of traceability information And a display device capable of displaying a graph indicating traceability information, and the traceability management control means is a detector for acquiring detection data of a detector for detecting the operation state of each device and / or the state of the base paper Data acquisition means and this detector data acquisition means Cut control data for acquiring a cut signal indicating the cutting operation of the ball sheet and calculating the cumulative cut number Nx of the corrugated cardboard sheet cut by the cut control at that time based on the cut signal and the actual value Lx of the cut length The distance L, which is the length of a cardboard sheet located between the cutter device and the predetermined detector at a predetermined timing and predetermined detector to be acquired by the calculation means, the detector data acquisition means, and the cutter device The sum L + dx of the sheet flow length dx up to the position of the front end of the corrugated cardboard sheet passing through is calculated, the predetermined timing to be acquired, the detection data detected by the predetermined detector, and the calculated distance L + dx Data management control during production to store the value in the database in association with the calculated cumulative cut number Nx Based on the stored cumulative cut number Nx, the actual value Lx of the cutting length, and the sum L + dx of the distance, the position on the upstream side of the position of the corrugated sheet of the cumulative cut number Nx Specific cumulative cut number calculation means for calculating the cumulative cut number of the cut cardboard sheet at the position where the cumulative cutting length Ln which is the sum of the value Lx exceeds the sum L + dx of the distance as the specific cumulative cut number M The display control means is characterized by displaying M as traceability information indicating a relationship between a predetermined timing to be acquired and detection data detected by the predetermined detector as a graph.

  In the present invention thus configured, the operating condition of each corrugator device and / or the state of the base paper in each device detected at the specific cumulative cut number M, the predetermined timing to be acquired, and the predetermined detector The traceability information indicating the relationship with the detection data indicating a can be displayed as a graph, so that it is not necessary to print the individual identification information on the cut sheet of cardboard sheets (product sheet) by the printing device, and the non-defective item -The operating condition and / or the condition of the base paper related to all product sheets including defective products can be inquired after the end of production, thereby ensuring more effective traceability of the cut cardboard sheet I can do it. Therefore, for example, if a defective product is found in the product sheet after the end of production, the content of the defect, the operation state of each device at the time of manufacturing the corrugated cardboard sheet of the order number including the defective product, and / or Since the condition of the base paper can be inquired, the operator can effectively estimate the cause of the defect and can effectively estimate the range in which the defective sheet is included in the product sheet.

  In the present invention, preferably, the traceability management control means further includes traceability information storage means for storing detection data indicating the operation state of each device and / or the state of the base paper as traceability information associated with the cumulative cut number M. .

In the present invention, preferably, the predetermined timing to be acquired by the detector data acquisition means and the predetermined detector are such that the amount of change of detection data in the predetermined detector acquired by the detector data acquisition means is predetermined. Timing when the threshold is exceeded and its detector.
In the present invention configured as described above, for example, a value indicating an operating condition of the apparatus which may cause a defective portion in a corrugated cardboard sheet and / or a value indicating a condition of a base paper is set as a predetermined threshold value. In this way, it is possible to effectively identify a corrugated cardboard sheet having a high degree of defects. Also, the amount of data stored in the database can be minimized.

In the present invention, preferably, when the amount of change in the detected data does not exceed the predetermined threshold, the display control means performs detection immediately before the time when the amount of change in the detected data exceeds the predetermined threshold. A traceability graph is displayed on the display device by linearly linking the value of the data and the value of the detection data at the next time when the amount of change of the detection data exceeds a predetermined threshold.
According to the present invention configured as described above, traceability of all product sheets can be secured more effectively with a small amount of data.

In the present invention, preferably, the predetermined timing to be acquired by the detector data acquisition means is a predetermined time interval based on the cutting interval by the cutter device.
According to the present invention configured as described above, traceability of all the product sheets can be ensured more reliably.

  In the present invention, preferably, the plurality of devices provided on the upstream side of the cutter device in the corrugator include base paper holder, splicer, single facer, corrugator bridge, brake stand, preheater, glue machine, double facer, and slitter scorer. Including.

  According to the production control device of the corrugator of the present invention, it is possible to ensure more effective traceability that can be inquired after the production end of the production information of the product sheet.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows the whole structure of the corrugator (cardboard sheet manufacturing apparatus) to which the production control apparatus of the corrugator by embodiment of this invention is applied. It is a block diagram showing a control system of a production control device of a corrugator by an embodiment of the present invention. It is a block diagram which shows the detail of the traceability management control part of the control system shown in FIG. It is a figure which shows the positional relationship of the corrugated-cardboard sheet | seat on a corrugator line, a cutter, and a detector for demonstrating the outline | summary of the traceability control of the production management apparatus of the corrugator by embodiment of this invention. It is a figure for demonstrating the calculation method of the specific cumulative cut number M in the traceability control of the production management apparatus of the corrugator by embodiment of this invention, FIG. 5 (a) is the specific cumulative cut number M in 1 production order. FIG. 5B is a diagram showing an outline of a method of calculating a specific cumulative cut number M including two or more production orders and defective portions. It is a flowchart which shows the control content performed at the time of the corrugated-cardboard sheet production in the production management apparatus of the corrugator by this embodiment. FIG. 7 is a table showing an example of detection information on each device and base paper from the base paper support to the brake stand and a predetermined condition for determining that there is a change in the production control device of the corrugator according to the present embodiment. FIG. FIG. 7 is a table showing an example of detection information on each device and base paper from a preheater to a cutter and a predetermined condition for determining that there is a change in the production control device of the corrugator according to the present embodiment. It is a chart which shows the information stored incidentally to a production order in a production control device of a corrugator by this embodiment. It is a flowchart which shows the control content performed based on an instruction | indication of an operator after completion | finish of corrugated-cardboard sheet production in the production control apparatus of the corrugator by this embodiment. It is a figure which shows an example of the data displayed on a display screen by execution of the control flow shown in FIG. 10, and is an example of the graph which can be estimated that abnormality has arisen. It is a figure which shows an example of the data displayed on a display screen by execution of the control flow shown in FIG. 10, and FIG. 12 (a) and FIG.12 (b) are examples of the graph which can be estimated that operation is normal. It is. FIG. 13 is a diagram showing an example of data displayed on the display screen by execution of the control flow shown in FIG. 10, and FIG. 13 (a) is a graph that can be estimated that the operation is normal; It is a graph which can presume that driving is abnormal. It is a figure which shows an example of the data displayed on a display screen by execution of the control flow shown in FIG. 10, and is a graph which can be estimated that driving | operation is normal.

Next, with reference to the accompanying drawings, a corrugator production control apparatus according to an embodiment of the present invention will be described.
First, with reference to FIG. 1, an overall structure of a corrugator (cardboard sheet manufacturing apparatus) to which a corrugator production control apparatus according to an embodiment of the present invention is applied. FIG. 1 is a side view showing an overall structure of a corrugator to which a production control device for a corrugator according to an embodiment of the present invention is applied.
In FIG. 1, the code | symbol 1 shows a corrugated-cardboard sheet manufacturing apparatus (corrugator machine), This corrugated-cardboard sheet manufacturing apparatus 1 back liner (back liner base paper) 4, center core (core base paper) 2, and front liner (front liner) Three base rolls (mill roll stand) 8 provided with a pair of each base paper roll (for example, base core paper roll 2a for core) 6 of the base paper) 6 and a timing when one base paper remaining length of the pair of base paper rolls decreases Alternatively, at the timing of changing the base paper due to order change, etc., form a corrugated step on the core 4 by the three splicers 10 that perform splicing on the base paper of the other base paper roll, the upper roll 12 and the lower roll 14 Then, the core 4 on which the corrugated step is formed and the back liner 2 are pasted together with the glue adhered to the top of the core 4 by the glue roll 16 to form a single-faced cardboard sheet The single facer 20 producing 18 and the single-faced corrugated sheet 18 produced by the single facer 20 are dried, and against the speed fluctuation due to various factors of the single facer 20 and the double facer 36 described later on the downstream side. In order to achieve balance, a corrugator bridge 22 for retaining the single-faced corrugated sheet 18, a brake stand 24 for aligning the edges of the single-faced corrugated sheet 18 and providing a constant tension, heat on the single-faced corrugated sheet 18 and the front liner 6 And a preheater 26 for keeping the water content at a predetermined value.

  The corrugated sheet manufacturing apparatus 1 further includes a glue roll 28 for gluing the top of the single-faced corrugated sheet 18 sent from the preheater 26 and a doctor roll 30 for adjusting the gluing amount according to a predetermined gap with the glue roll 28. Glue machine 32, double facer 36 which bonds front liner 6 to single sided corrugated sheet 18 by pressure plate, thermo bar, pressure roll and weight roll to produce double sided corrugated sheet 34, double sided cardboard by scorer 38 and slitter 40 A slitter scorer 42 for slitting and creasing the sheet 34, a cutter 44 for cutting the double-sided corrugated sheet 34 to a predetermined cutting length L in the sheet flow direction, and a stacker 46 for stacking the cut double-sided corrugated sheets And have.

Next, an example of a detector provided in each device (such as a single facer) constituting the corrugator 1 will be described with reference to FIG.
As shown in FIG. 1, a base roll 8 is provided with a base roll number detector 50 for detecting a predetermined number of the base roll (2a), and the splicer 10 detects the completion of splicing (paper splicing). A splice completion detection sensor 52 is provided, and the single facer 20 is provided with a core surface temperature detection sensor 54 for detecting the surface temperature of the core 4 and a gap between the upper roll (press roll) 12 and the lower roll 14 The servomotor encoder 56 for adjusting the size, the glue viscosity acquisition device (detector) 58 for obtaining the measured viscosity of the glue provided to the glue roll 16, and the single facer for detecting the operating speed of the single facer 20 A driving speed detection sensor 59 is provided.
The brake stand 24 is also provided with a single-sided corrugated sheet tension detection sensor 60 for detecting the tension of the single-sided corrugated sheet 18, while the front liner tension for detecting the tension of the front liner base sheet 6 on the upstream side of the preheater 26. A detection sensor 62 is provided.
Further, the single facer 20 and the preheater 26 are provided with a total of three preheater winding amount detection sensors 63a, 63b, 63c for detecting the winding amount of the corrugated sheet of the preheater 26.
Further, on the downstream side of the preheater 26, there is provided a step forming defect detection sensor 64 for detecting a forming failure of the step of the single-faced cardboard sheet 18, and the glue machine 32 measures the glue supplied to the glue roll 28. A glue viscosity acquisition device (detector) 66 for acquiring the measured viscosity is provided, and the double facer 36 is provided with a double facer operating speed detection sensor 67 for detecting the operating speed of the double facer 36 and acceleration or deceleration of the operating speed of the double facer 36 The slitter scorer 42 is provided with an encoder 70 of a servomotor for moving the slitter 40 in the sheet width direction, and the slitter scorer 42 is provided with an encoder 70 on the upstream side of the cutter 44. A double-sided corrugated sheet sheet warp amount detection sensor 72 is provided to detect a warp amount of the double-sided corrugated sheet 34 Is, the cutter 44 is cut signal detection sensor 73 that detects the cutting operation of the cardboard sheet by the cutter 44 is provided.

Furthermore, measuring rolls 74 and 76 for detecting the amount of stagnant single-faced corrugated sheet 18 on the corrugator bridge 22 are positioned downstream of the liner liner splicer 10 and between the slitter scorer 42 and the cutter 44. It is provided in the position respectively. The retention amount can be calculated by a known method (for example, JP-A-2014-180810).
Further, by means of the measuring roll 76 provided in front of the cutter 44, it is possible to detect “the sheet flow length d in the current cut control” and “the actual cut lengths La, Lb, Lc of the sheet” described later.
In addition, various devices such as a detector of the operating speed of the single facer 20 and a detector of a pressure roll of a double facer and a pressure force of a thermobar other than the above-mentioned detectors are included in each device constituting the corrugator 1 A vessel is provided. Detection values of all the detectors provided in the corrugator 1 including these detectors can be used for traceability management control described later.

Next, a control system of a production control device of a corrugator according to an embodiment of the present invention will be described with reference to FIG. 2 and FIG. FIG. 2 is a block diagram showing a control system of a production control device of a corrugator according to an embodiment of the present invention, and FIG. 3 is a block diagram showing details of a traceability management control unit of the control system shown in FIG.
First, as shown in FIG. 2, the corrugator production management device of the present embodiment has a production management control device 80. This production management device 80 integrally controls and manages the operation of each device of the corrugator 1. A production management control unit 82 and a traceability management control unit 84 are provided.
Next, as shown in FIGS. 2 and 3, the traceability management control unit 8 is connected to a database 86, an operator input device 88, and a display device 90. The display device 90 is a monitor, a tablet terminal or the like provided in the production management device.
The traceability management control unit 84 receives signals from the above-described detectors 50 and the like. In addition, each apparatus (a single facer (20) etc.) shown by each block is controlled by the production management control unit 82 to produce a corrugated cardboard sheet.

Next, as shown in FIG. 3, the signal of each detector is input to the detection data acquisition unit 100 of the traceability management control unit 82. The detection data acquisition unit 100 includes a cut signal input unit 102 and a sheet flow length detection unit 104. The cut signal from the cut signal detection sensor 73 is input to the cut signal input unit 102, and the measuring roll The flow rate value of the corrugated cardboard sheet detected by 76 is input to the sheet flow length detection unit 104.
The detection data of each detector acquired by the detection unit 104 and the like is input to the cut control data calculation unit 106, and is further input to the production data management unit 108.
The cut control data calculation unit 106, based on various data that can be read from the detection data acquisition unit 100 and production control data that can be read from the production control unit 82, a cut value actual value Lx, which will be described later, The cumulative cut number Nx and the like are calculated, and the calculated data are stored in the database 86.
The production-time data management control unit 108 calculates a distance L + d to be described later, and stores each detection data and the distance L + d in the database 86 in association with the cumulative cut number Nx.
The specific cumulative cut number Mx calculation unit 110 calculates the specific cumulative cut number Mx based on the cumulative cut number Nx, the distance L + d, and the actual value Lx of the cutting length stored in the database 86, as described later. The calculation result of is temporarily stored in the traceability information storage unit (RAM) 112.
Based on the data from the specific cumulative cut number Mx calculation unit 110 and the traceability information storage unit 112 based on the input of the operator by the input device 88, the display control unit 114 determines the specific cumulative cut number Mx and the detection data of each detector. Is displayed on the display device 90 as a traceability graph (see FIG. 11 and the like).

Next, an outline of traceability control of the production control device of the corrugator according to the embodiment of the present invention will be described with reference to FIGS. 4 and 5. FIG. 4 is a view showing a positional relationship between a corrugated sheet on a corrugator line, a cutter and a detector, for explaining an outline of traceability control of a production control device for a corrugator according to an embodiment of the present invention; FIGS. 5A and 5B are diagrams for explaining a method of calculating a specific cumulative cut number M in traceability control of a production control device of a corrugator according to an embodiment of the present invention, and FIG. 5B shows an outline of a calculation method of the specific cumulative cut number M including two or more production orders and defective parts.
First, as shown in FIG. 4, the traceability management control according to the present embodiment is performed at predetermined timing (when the change amount of the detection value exceeds the predetermined value, which will be described later) and / or at the time of regular acquisition of the previous detection value. The uncut sheet passing a certain detector position on the corrugator 1 line at a time interval X)) is then conveyed in the sheet flow direction and accumulated when cut by the downstream cutter. The cut number M is specified.
Therefore, in the present embodiment, first, as the first function, “predetermined value detected by each detector” at “predetermined timing” detected, and “sheet flow at the time of current cut control by the cutter 44”. Add the sum L + d of length d and distance L (distance including staying amount) which is the length of corrugated sheet located between cutter 44 and each detector to "cumulative cut number N" in current cut control . More specifically, the associated data is stored in the database 86 as described later.
Here, the “sheet flow length d” is a value indicating the distance the sheet has flowed after being cut by the cutter 44 most recently at the above-described predetermined timing, and specifically, the cut-off cutter device The distance from the tip of the cardboard sheet passing through to the cutter 44 is calculated. Also, “the distance L from the cutter 44 to each detector” is calculated as a distance corresponding to the total length of the sheet, including the stagnation portion in the corrugator bridge 22. The “cumulative cut number” is, for example, a number counted as a cumulative number from the start of production on a certain date.

・・・式（１）

・・・式（２）
ここで、式（１）において、「ｉ」は変数であり、「Ｌａ」は、オーダ番号１における、段ボールシートの切断長の実績値Ｌａ[mm]であり、「Ｌ＋ｄ」は、上述した、カッタ４４から各検出器までの間に位置するシート長さである距離Ｌ（滞留量を含む距離）とシート流長ｄとの和[mm]であり、ｎは、オーダ番号１の切断枚数の実績値（最大値）である。
また、式（２）において、Ｍａは、求めたい「特定累積カット番号」であり、Ｎａは、上述した、現カット制御における累積カット番号であり、ｎ’は、式（１）を満たしたときのｉの値である。
この第２の機能では、まず、式（１）において、変数ｉに１から順に整数を代入していき、その実績切断長の累積値「ΣＬａｉ」＝「Ｌｎ」が、Ｌ＋ｄを超えたときの変数ｉの値を求め、式（２）に代入し、特定累積カット番号Ｍａが算出される。なお、図５（ａ）では、Ｎａ＝１とし、Ｌ＋ｄを超えたときの変数ｉの値＝ｎ’として示している。 Next, referring to FIG. 5, the above-mentioned "specification from the actual cutting length La of the corrugated sheet", which is the sheet length actually cut in the current cutting control at the predetermined timing described above, which is the second function. A calculation method for calculating the cumulative cut number M "will be described.
First, an example in which the specific cumulative cut number Ma is obtained within one order will be described with reference to FIG.
Here, in FIG. 5 (a), for convenience of explanation, the cutter and the detector are respectively shown by virtual lines, but in-order cut numbers “1, 2... N ′” shown in FIG. 5 (a) And "the actual cutting length La" is the cumulative value and the actual value in the order when production of the corrugated cardboard sheet of the order number 1 shown as an example here is all finished, and the production management control unit This is a value stored in 82 (see FIG. 2).
In the example shown in FIG. 5A, the specific cumulative cut number Ma is calculated by the following equation (1) and equation (2).

... Formula (1)

... Formula (2)
Here, in the formula (1), “i” is a variable, “La” is the actual value La [mm] of the cutting length of the cardboard sheet in the order number 1, and “L + d” is as described above, A sheet length L between the cutter 44 and each detector (the distance including the staying amount) and the sheet flow length d is a sum [mm], where n is the number of cut sheets of the order number 1 It is an actual value (maximum value).
Further, in the equation (2), Ma is the “specified cumulative cut number” desired to be obtained, Na is the cumulative cut number in the current cut control described above, and n ′ satisfies the equation (1) Is the value of i.
In this second function, first, in the equation (1), an integer is substituted into the variable i in order from 1 and the cumulative value of the actual cutting length “ΣLai” = “Ln” exceeds L + d. The value of the variable i is determined and substituted into the equation (2) to calculate the specific cumulative cut number Ma. In FIG. 5A, it is assumed that Na = 1 and the value of variable i = n 'when L + d is exceeded.

・・・式（３）

・・・式（４）
ここで、式（３）において、「ｉ」、「ｊ」、「ｋ」は変数、「Ｌａ」、「Ｌｂ」、「Ｌｃ」は、オーダ番号１、不良部分、オーダ番号２における、それぞれのシート切断長の実績値[mm]であり、ｎ、ｍ、ｐは、それぞれ、オーダ番号１、不良部分、オーダ番号２における切断枚数の実績値（最大値）である。
また、式（４）において、Ｍａは、求めたい「特定累積カット番号」であり、Ｎａは、上述した、現カット制御における累積カット番号であり、ｐ’は、式（１）を満たしたときのｋの値である。この例では、式（３）において、オーダ番号１および不良部分の実績切断長の累積値（Ｌｎ）は、最大枚数ｎ、ｍまで総和を求めた値であり、その値がＬ＋ｄを超えない場合を示している。
すなわち、まず、式（３）において、変数ｉに１から順に整数を代入していき、ｉが最大値ｎになったときに実績切断長の累積値「ΣＬａｉ」がＬ＋ｄを超えておらず、次に、変数ｊに１から順に整数を代入していき、ｊが最大値ｍになったときに実績切断長の累積値「ΣＬａｉ＋ΣＬｂｊ」がＬ＋ｄを超えておらず、次に、変数ｋに１から順に整数を代入していき、その実績切断長の累積値「ΣＬａｉ＋ΣＬｂｊ＋ΣＬｃｋ」＝「Ｌｎ」が、Ｌ＋ｄを超えたときの変数ｋの値を求め、式（４）に代入し、特定累積カット番号Ｍａが算出される。なお、図５（ｂ）では、Ｎａ＝１とし、「Ｌｎ」が、Ｌ＋ｄを超えたときの変数ｋ＝ｐ’として示している。 Next, with reference to FIG. 5B, an example of a calculation method in the case where the above-mentioned "specified cumulative cut number M" includes two orders and defective portions will be described.
Here, as in FIG. 5 (a), FIG. 5 (b) also shows in-order cut numbers “1, 2... N”, “1, 2. 2 ... m ", and the actual cutting lengths" La "," Lb ", and" Lc "are the order numbers 1 shown as an example here, the range in which a defect has occurred, and the corrugated sheet of order number 2 It is a cumulative value and actual value in each order or defective part when all the production is finished, and is a value stored in the production control unit 82 (see FIG. 2). The in-order cut number and the defective-part cut number described above are numbers obtained by assigning the cumulative cut number Na from the numerical value 1 for each order or for each defective portion.
In the example shown in FIG. 5B, the specific cumulative cut number Ma is calculated by the following equation.

... Formula (3)

... Formula (4)
Here, in the equation (3), “i”, “j”, “k” are variables, “La”, “Lb”, “Lc” are the order number 1, the defective portion, and the order number 2, respectively. It is an actual value [mm] of the sheet cutting length, and n, m and p are actual values (maximum values) of the number of cut sheets in order number 1, defective portion and order number 2, respectively.
Further, in the equation (4), Ma is the “specified cumulative cut number” desired to be obtained, Na is the cumulative cut number in the current cut control described above, and p ′ satisfies the equation (1) Is the value of k. In this example, in the equation (3), the cumulative value (Ln) of the order number 1 and the actual cutting length of the defective portion is a value obtained by summing up to the maximum number n and m, and the value does not exceed L + d. Is shown.
That is, first, in the equation (3), an integer is substituted into the variable i in order from 1 and the cumulative value "値 Lai" of the actual cutting length does not exceed L + d when i reaches the maximum value n, Next, an integer is substituted into the variable j sequentially from 1 and when j reaches the maximum value m, the cumulative value of the actual cutting length “LLai + 実 績 Lbj” does not exceed L + d, and then 1 is added to the variable k The integer is substituted in order from, and the value of variable k when the accumulated value of the actual cutting length "切断 Lai + L Lbj + Σ Lck" = "Ln" exceeds L + d is determined and substituted into formula (4), specific cumulative cut number Ma is calculated. In FIG. 5B, Na = 1 and “Ln” is shown as a variable k = p ′ when L + d is exceeded.

Next, the control contents of the production control device of the corrugator according to the present embodiment will be described with reference to FIGS. 6 to 9. FIG. 6 is a flowchart showing the control contents executed at the time of production of corrugated cardboard sheets in the production control device of corrugator according to the present embodiment, and FIG. 7 is from base paper hanging to the brake stand in the production control device of corrugator according to the present embodiment. FIG. 8 is a table showing an example of detection information on each apparatus and base paper and a predetermined condition for determining that there has been a change, and FIG. 8 shows detection information from the preheater to the cutter and the predetermined condition shown similarly to FIG. FIG. 9 is a chart showing information to be stored incidentally to the production order. In the flowchart of FIG. 6, S indicates each step.
First, as shown in FIG. 6, in S1, the cut control data calculation unit 106 (FIG. 3) of the traceability management control unit 84 of this embodiment is based on the production management data readable from the production management control unit 82. Initialize the cumulative cut number at the start of production. The production start time is, for example, when the preparation operation of the corrugator ends at the beginning of one day of a certain date and production of an actual product starts.
Next, in S2, it is determined whether or not the signal of the cutter 44 is input, that is, whether or not the cutting of the cardboard sheet by the cutter 44 has been performed. When the cut signal is not input in S2, the process proceeds to the steps after S5 described later.
If it is determined in S2 that a cut signal has been input, the process proceeds to S3, and "1" is added to the cumulative cut number.
Next, in S4, the data at the time of the current cut control is stored in the database 86 (FIG. 2). The data at the time of the current cut control includes the actual value Lx of the cutting length and the cumulative cut number Nx. Here, the cumulative cut number Nx is calculated from production control data that can be read from the production control unit 82, and the actual value Lx of the cutting length is the flow length of the corrugated cardboard sheet detected by the measuring roll 76 and the cutting signal It is calculated based on the signal indicating the cutting operation of the cardboard sheet detected by the detection sensor 73. An integer 1 is added to x each time the process of S4 is performed.

Next, in S5, the detection value (the value of the detection item) by each detector is input. Specifically, in this S5, the detection values from each detector such as the base paper roll number detector 50 as shown in FIG. 2 are directly from each detector or via the production control section 82. The detection data acquisition unit 100 of the traceability management control unit 84 is input. The detectors are not limited to those shown in FIGS. 1 and 2 but include all the various detectors provided in the corrugator 1.
Here, an example of the detector and the detection value input in this S5 is shown in FIG. 7 and FIG.
For example, in this S5, as shown in FIGS. 2 and 7, for example, the base paper roll number detected by the base paper roll number detector 50 of the base paper holder 8 is input, and a detection signal by the splice completion detection sensor 52 of the splicer 10 ON / OFF is input, and the temperature detected by the core surface temperature detection sensor 54 of the single facer 20 is input. Similarly, as shown in FIG. 2 and FIG. 8, for example, the value of the sheet warpage amount in the cutter 44 is input.

Next, in S6, the amount of change in each detection value input in S5 is calculated, and it is determined whether the amount of change exceeds a predetermined value (threshold value).
Here, the “change amount” of each detection value is, for example, when the detection item is a base paper roll number, the base paper roll number detected by the base paper roll number detector 50 is changed, and the detection item is In the case of the splice completion signal, the detection signal by the splice completion detection sensor 52 is changed from OFF to ON.
Furthermore, for example, when the detected item is the core surface temperature, the “change amount” of the temperature detected by the core surface temperature detection sensor 54 is calculated. The amount of change can be calculated by the function of the production data management control unit 108 (see FIG. 3), and detection data of a predetermined detector (for example, the core surface) input in the input step of S5 at a predetermined timing. It is calculated by comparing the detection value of the temperature detection sensor 54) with the detection data of the detector (detection value of the core surface temperature detection sensor 54) input in step S5. That is, the “amount of change” is calculated by repeatedly executing steps S2 to S5.
Further, the "predetermined value (threshold value)" in S6 is set in advance as shown in "predetermined conditions" in FIGS. 7 and 8. For example, "predetermined value" means that the base paper roll number is changed when the detected item is the base paper roll number, and when the detected item is the splice completion signal, the splice completion signal is from OFF to ON or ON When it is changed to OFF, and the detected item is the core surface temperature, the change amount of the core surface temperature is 1 ° C. Further, as shown in FIG. 8, for example, when the detected item is a sheet warp amount, the change amount of the warp amount indicated by the ratio of the height of the sheet warp to the length in the width direction of the sheet is 0.1% It is time.
Such "predetermined value (threshold value)" is set in advance as, for example, the value of the amount of change in the operation state of each device and / or the state of the base paper that may cause a defective portion in the cardboard sheet. Be done.
If it is determined in S6 that the change amount of each detected value exceeds the predetermined value, the process proceeds to S8.

On the other hand, when it is determined in S6 that the change amount of each detected value does not exceed the predetermined value, the process proceeds to S7, and it is determined whether the time interval X [msec] has elapsed since the predetermined acquisition of the previous detected value. If the time has passed, the process proceeds to S8.
The time interval X [msec] in this S7 is set so that data can be allocated to substantially all of the cut cardboard sheets. More specifically, it is preset based on a predetermined minimum time interval of cutting by the cutter 44. The predetermined minimum time interval of cutting by the cutter 44 is set based on the cutting command length (FIG. 9) which is information incidental to the production order and the maximum production speed of the corrugated sheet.

Next, in S8, first, the distance L + dx (see FIG. 4 and FIG. 5) from the cutter to each detector at the time when each detection value is input in S5 is calculated. Then, in S8, the value of the calculated distance L + dx and the detection value of each detector input in S5 are respectively associated with the cumulative cut number Nx (see FIG. 4 and FIG. 5) to the database 86. Remember.
In addition, in S8, the information attached to the production order shown in FIG. 9 is also stored in the database 86 in association with the accumulated cut number Nx, together with the production order number (or the order name). The process of S8 is executed by the production-time data management control unit 108.
Next, in the present embodiment, the processes of S2 to S8 are repeated until all production for one day is completed (S9). Some change has occurred in each device of the corrugator 1 such that the amount of change of the detection value of each detector exceeds a predetermined value (such as when it is determined Yes in S6) by repeating the processes of S2 to S8. It is possible to store the change information of the value of each detection item in the cut individual cardboard sheets, including the case.

Next, control contents to be executed based on an instruction from the operator after the production of the corrugated cardboard sheet in the production control device for corrugator according to the present embodiment will be described with reference to FIG. 10 and FIG. FIG. 10 is a flow chart showing the control contents executed based on the operator's instruction after the production of the corrugated cardboard sheet in the production control device for corrugator according to the present embodiment, and FIG. 11 is an execution of the control flow shown in FIG. FIG. 6 is a diagram illustrating an example of data displayed on the display screen by the In the flowchart of FIG. 10, S indicates each step.
In the present embodiment, for example, when the corrugated sheet for one day is finished by the corrugator 1 and a defective product is detected at a later date, the accumulated cut number Nx stored in the database 86 and the value are associated with it. The distance L + dx and the value of each detection item are used to trace what event has occurred in the process of manufacturing the corrugated cardboard sheet, thereby ensuring traceability.

As shown in FIG. 10, in the present embodiment, first, in S11, the operator uses the input device 88 (see FIG. 2) to input the date on which the production of a corrugated sheet according to a predetermined production order was performed and the detected item. . The detection item value is, for example, a detection value of each detector as shown in FIG. 7 and FIG.
Next, the process proceeds to S12, and the specific cumulative cut number Mx calculation unit 110 (see FIG. 3) of the traceability management control unit 84 (see FIG. 3) calculates the number of cut cardboard sheets for one day to be displayed based on the input of S11. The data is read from the database 86. The data to be read is data such as the order number, the actual value Lx of the cutting length, the cumulative cut number Nx, the distance L + d from the cutter to each detector, and the value of each detection item.

Next, in step S13, calculation of a specific cumulative cut number is performed on the total number of data of each detected item. In S13, as described above with reference to FIGS. 5A and 5B and the equations (1) to (4), the cumulative cut when the cumulative value Ln of the actual cutting length exceeds the distance L + d The number is calculated and stored in the traceability information storage unit (RAM) 112 of the traceability management control unit 84 as the “specified cumulative cut number Mx”. In S13, various data associated with the above-described cumulative cut number Nx are stored in association with the specific cumulative cut number Mx. An integer 1 is added to x each time processing is performed.
Next, in step S14, the operator inputs an order number to be displayed by the input device 88.
Here, in S11 and S14 described above, for example, the operator can input a date, a detection item (such as a single facer speed), and an order number while viewing the screen as shown in FIG. It has become.

Next, in step S15, the display control unit 114 of the traceability management control unit 84 checks the data of each detection item associated with the specific cumulative cut number Mx included in the order number input in step S14 in the traceability information storage unit 112. Read from
Next, proceeding to S16, as a graph indicating traceability information, a graph in which the specific cumulative cut number Mx is the horizontal axis and the data of each detection item is the vertical axis is displayed on the display 90 as in the example shown in FIG. Display. Here, the cut number on the horizontal axis represents the specific cumulative cut number Mx, but for each order number, the cut number is assigned from 0 and displayed.
In S16, when the graph displayed on the display device 90 is scrolled based on the operator's operation, various data of order numbers before and after the order number input in S15 are also automatically processed by the processes of S12 and S13. It is supposed to be displayed.

  Note that as a modification of the present embodiment, the determination process of S7 shown in FIG. 6 may not be performed, and the storage process may be performed in S8 only when it is determined Yes in S6. In this modification, for the accumulated cut number Nx during which the determination of No is made in S6, for example, immediately before the determination of No, the determination of Yes in S6 and the detection stored in S8 are performed. Execute graphing by linearly linking the item value with the value of the detected item stored in S8, which is determined as Yes in S6 at the next time point, while holding the value of No determined. To do.

Next, the function and effect of the production control device for corrugator according to the embodiment of the present invention will be described with reference to FIGS. 12 to 14 are diagrams showing an example of data displayed on the display screen by execution of the control flow shown in FIG. 10, and FIGS. 12 (a) and 12 (b) show normal operation. FIG. 13 (a) is a graph that can be estimated that driving is normal, and FIG. 13 (b) is a graph that can be estimated that driving is abnormal, and FIG. Is a graph that can be estimated that driving is normal.
First, traceability / estimation examples of the display example shown in FIG. 11 will be described.
In FIG. 11, the speed of the single facer detected by the driving speed detection sensor 59 is greatly reduced (stopped) near the number of cuts 55 of the order number 15350, and the speed of the double facer detected by the driving speed detection sensor 67 is The speed is greatly reduced (stopped) near the cut number 163 of the order number 15340.
Here, as described above, the stop timings of the single facer 20 and the double facer 36 are shifted with respect to the number of cuts, but at the time of actual production of a corrugated cardboard sheet, those devices are stopped almost simultaneously. As can be seen with reference to FIG. 1, the distance from the cutter 44 to the single facer 20, including the sheet retention amount on the corrugator bridge 22, reaches ten and several meters in terms of sheet length. Then, after stopping the single facer 20 and the double facer 36, when the operation is resumed, at first, a corrugated sheet of 10 several meters between the cutter 44 and the double facer 36 is cut by the cutter 44, and then the single facer The portion at the time of stopping the server 20 is cut off. Therefore, in the traceability graph as shown in FIG. 11, the cut number 163 which is the stop portion of the double facer is displayed in a shifted manner with respect to the cut number 55 which is the stop portion of the single facer.

An example of estimation by the operator in FIG. 11 “specification of factor of failure, example of estimation of range including other defective products” is as follows.
(1) Among the product sheets produced in the order "No. 15340", defective products having a bonding failure on the front liner side are found in a subsequent inspection.
(2) The splice signal is output at the 50th cut of the order "15350" one order later.
(3) When the 49th cut portion of the order "No. 15350" reaches the single facer, the single facer rapidly decelerates and then stops.
(4) The double facer stops a little after 163 cut of the order "No. 15340" of the immediately preceding order "15340".
From these situations (1) to (4), the operator stops the single facer 20 due to the splice failure after the splicing operation of the base paper is performed in the order "No. 15350" located on the upstream side of the corrugator It can be estimated that the double facer 36 has also stopped because the retention amount of the single-faced corrugated sheet produced by the single facer 20 on the bridge 22 has become smaller than a predetermined amount.
Therefore, the defective product mixed in the product sheet of order "No. 15340" is removed as a defective product from the corrugated sheet which is not stable because the initial operation speed is low after re-operation of the double facer 36 It can be estimated that it has been mixed in the product sheet.
Such graphic display enables the operator to trace an event that has occurred during the production of a cardboard sheet, thereby ensuring traceability.

Next, estimation examples of the graphs shown in FIGS. 12 (a) and 12 (b) will be described.
Fig.12 (a) is a graph which shows the example which can presume that the winding amount of a preheater is normal, FIG.12 (b) shows the example which can presume that a glue * doctor roll clearance gap is normal. It is a graph.
First, in FIG. 12 (a), there is a small order at the dry end, and the change in the winding amount of the preheater 26 when the double facer 36 and the single facer 20 both decelerate and then accelerate is shown in FIG. Before and after the acceleration of the facer 20 is displayed as a graph.
As shown in this graph, the winding amount of the one-step preheater (PR1, one step) detected by the preheater winding amount detection sensors 63a and 63b increases from around the 20th cut, but the three-step preheater (PR3 · lower) Since acceleration has already ended on the side, the winding amount detected by the preheater winding amount detection sensor 63c does not change. Thus, it is possible to estimate that the winding amount of the preheater is normal.
Next, in FIG. 12 (b), there is displayed a graph in which there is a small order at the dry end portion, and the double facer 36 and the single facer 20 are both decelerating. The glue gap is wide at low speed and narrow at high speed.
As shown in this graph, the glue gap of glue machine 32 widens around the 20th cut, and the gap narrows from around 75th cut, but the distance from the cutter 44 on the single facer 20 side is the glue machine 32. Since it is farther, the gap of the glue spreads late, which makes it possible to estimate that the glue-doctor roll gap is normal.

Next, an analysis example of the display examples shown in FIGS. 13 (a) and 13 (b) will be described.
FIG. 13 (a) is a graph showing an example in which the tension value of the liner in the double facer can be estimated to be normal, and FIG. 13 (b) is an example in which the tension value of the liner in the double facer can be estimated to be abnormal Is a graph showing
First, in FIG. 13A, a splice completion signal by the splicer 10 of the front liner 6 supplied to the double facer 36 is input as an event signal, the basis weight of the base paper decreases, and the paper width decreases. It is displayed as a graph.
As shown in this graph, the tensile force value (DL tension value) of the front liner 6 supplied to the double facer 36 is gradually lowered in accordance with the splice, so the tension value of the liner in the double facer is normal. It can be estimated that
Next, in FIG. 13 (b), a portion where there is a bonding failure of the front surface liner 6 is found at the head portion of the order in which there was a splice of the front surface liner 6 supplied to the double facer 36. , Is an example of displaying a graph.
As shown in this graph, at the time of splicing, the DL tension value is extremely lowered while showing an abnormal change in the vertical motion, so that there is adhesion failure due to the abnormality of the DL tension value at the first cut number of this order. Can be estimated.

Next, an analysis example of the display example shown in FIG. 14 will be described.
FIG. 14 is a diagram showing each event signal of reordering involving a splice, and is a graph showing an example in which it is possible to estimate that the operation is normal.
In FIG. 14, a splice completion signal by the splicer 10 of the core base paper 4 and the back liner 2 supplied to the single facer 20 is detected, and the order number is changed.
As shown in this graph, the single-stage failure detection device is activated at the splice portion of the core 4 and the order change part reaches the single facer 20 for the product control instruction to the single facer 20. The signal switches before the reordering on the graph because it switches in advance earlier. Thus, it can be estimated that the driving is normal.

As described above, the production management device 80 of the corrugator 1 according to the present embodiment includes the cutter device 44 and a plurality of devices (8, 10,...) Provided on the upstream side of the cutter device 44. Corrugator production control unit 82 which controls each of 44, 8, 10, ... to produce corrugated cardboard sheets, and operation status of each device of corrugator 1 and / or traceability of condition of base paper in each device A traceability management control unit 84 for managing and controlling information, a database 86 for storing traceability information, and a display device 90 capable of displaying a graph indicating traceability information, the traceability management control unit operating state of each device and And / or a detector data acquisition unit for acquiring detection data of a detector (50, 52,...) For detecting the state of the base paper 00 and the detector data acquisition unit 100 acquire a cut signal indicating the cutting operation of the corrugated sheet by the cutter device 44, and accumulation of the corrugated sheet cut by the cut control at that time based on the cut signal The cut control data calculation unit 106 that calculates the cut value Nx and the actual value Lx of the cutting length, and the predetermined timing to be acquired by the detector data acquisition unit 100 (“when the amount of change in detection value exceeds the predetermined value” And / or “the interval of time X from the time when the previous detection value was obtained at a fixed time” and a predetermined detector, a distance L which is a length of a corrugated sheet positioned between the cutter device 44 and the predetermined detector Along with calculating the sum L + dx of the sheet flow length dx to the position of the front end of the cardboard sheet passing through the cutter device 44 (see FIG. 4) Production time data management control unit 108 for storing detection data detected by a predetermined detector to be obtained and the value of calculated distance L + d in a database in association with the calculated cumulative cut number Nx, and this storage Based on the accumulated cut number Nx, the actual value Lx of the cutting length, and the sum L + dx of the distance, the position on the upstream side from the position of the corrugated sheet of the accumulated cut number Nx and the sum of the actual value Lx of the cutting length A specific cumulative cut number Mx calculation unit 110 that calculates the cumulative cut number of the cut cardboard sheet at a position where the cumulative cutting length Ln is greater than the distance sum L + dx as the specific cumulative cut number M, and the specific cumulative cut number M A graph of traceability information indicating a relationship between a predetermined timing to be acquired and detection data detected by a predetermined detector; And a display control unit 114 for displaying on the display device.
According to the present embodiment, the specific cumulative cut number M, the predetermined timing to be acquired, and the operation state of each device of the corrugator 1 and / or the state of the base paper in each device detected at the predetermined detector The traceability information indicating the relationship with the detection data indicating a can be displayed as a graph, so that it is not necessary to print the individual identification information on the cut sheet of cardboard sheets (product sheet) by the printing device, and the non-defective item -The operating condition and / or the condition of the base paper related to all product sheets including defective products can be inquired after the end of production, thereby ensuring more effective traceability of the cut cardboard sheet I can do it. Therefore, for example, when a defective product is found in the product sheet after the end of production, the operation state of each device at the time of manufacturing the corrugated cardboard sheet of the order number including the content of the defect and the defective product and / or the base paper in each device Since it is possible to inquire the state of the operator, the operator can effectively estimate the cause of the defect and can effectively estimate the range in which the defective sheet is included in the product sheet.

  Further, in the present embodiment, the traceability information storage unit 112 stores detection data indicating the operation state of each device and / or the state of the base paper as traceability information associated with the cumulative cut number M, and this storage unit 112 Since the RAM is provided in the production management control device 80, data management can be efficiently performed without storing it in the database.

Further, in the present embodiment, when the amount of change in detection data in a predetermined detector exceeds a predetermined value (predetermined threshold), the value of the distance L + dx and the detection value of each detector are respectively As stored in the database 86 in association with the cumulative cut number Nx (see FIGS. 4 and 5) (S6, S8 in FIG. 6), it is possible to effectively identify a corrugated sheet having a high degree of inclusion of defective portions. . Also, the amount of data stored in the database can be minimized.
Further, in the modification of the present embodiment, the value of the detection item stored in S8 that is determined as Yes in S6 at a certain point in time with respect to the cumulative cut number Nx while the determination is No in S6. At the next time point, since the detection item values that are determined as Yes in S6 and stored in S8 are linearly linked to perform graphing, the amount of data stored in the database 86 is smaller. However, it is possible to obtain the full traceability of the effectively cut cardboard sheet.

  Further, in the present embodiment, the value of the distance L + dx and the detection values of the respective detectors at the predetermined time interval X [msec] set based on the cutting interval by the cutter device 44 are respectively the accumulated cut number Nx Since they are stored in the database 86 in association with (see FIGS. 4 and 5) (S7 and S8 in FIG. 6), traceability of all product sheets can be ensured more reliably.

1 Corrugator (cardboard sheet manufacturing equipment)
8 original sheet support 10 splicer 20 single facer 22 corrugator bridge 24 brake stand 32 glue machine 36 double facer 42 slitter scorer 44 cutter 46 stacker 50 original paper roll number detector 52 splice completion signal 54 core surface temperature detection sensor 56 gap in single facer Encoder 58 for adjustment servomotor Glue viscosity acquisition device (detector)
59 Single facer operation speed detection sensor 60 Single-faced corrugated sheet tension detection sensor 62 Table liner tension detection sensor 63a, 63b, 63c Preheater winding amount detection sensor 64 Step mountain molding defect detection sensor 66 Adhesive viscosity acquisition device (detector)
67 Double facer operation speed detection sensor 68 Double facer acceleration speed reduction button 70 Servomotor encoder for moving in the slitter width direction 72 Double-faced corrugated sheet deflection amount detection sensor 73 Cut signal detection sensor

Claims (6)

Corrugator production control equipment,
The corrugator includes a cutter device and a plurality of devices provided on the upstream side of the cutter device, and a corrugator production control means for controlling each of these devices to produce a corrugated sheet.
Traceability management control means for managing and controlling the operation state of each device of the corrugator and / or the traceability information of the state of the base paper in each device;
A database for storing the traceability information;
A display device capable of displaying a graph indicating the traceability information;
The above traceability management control means
Detector data acquisition means for acquiring detection data of a detector for detecting the operation state of each device and / or the state of the base paper;
The detector data acquisition means acquires a cut signal indicating the cutting operation of the corrugated cardboard sheet by the cutter device, and based on the cut signal, the cumulative cut number Nx of the corrugated cardboard sheet cut by the cut control at that time and Cut control data calculation means for calculating the actual value Lx of the cutting length;
At a predetermined timing to be acquired by the detector data acquisition means and at a predetermined detector, a distance L which is a length of a corrugated sheet positioned between the cutter device and the predetermined detector and passing through the cutter device The sum L + dx with the sheet flow length dx up to the position of the front end of the cardboard sheet is calculated, and the predetermined timing to be acquired and detection data detected by a predetermined detector, and the value of the calculated distance L + dx Production time data management control means for storing in the above-mentioned database in association with the calculated cumulative cut number Nx;
Based on the stored cumulative cut number Nx, the actual value Lx of cutting length, and the sum L + dx of the distance, the position on the upstream side of the position of the corrugated sheet of the cumulative cut number Nx Specific cumulative cut number calculation means for calculating the cumulative cut number of a cut cardboard sheet at a position where the cumulative cutting length Ln which is the sum of the value Lx exceeds the sum of the distances L + dx as the specific cumulative cut number M;
Display control means for displaying traceability information indicating the relationship between the specific cumulative cut number M, the predetermined timing to be acquired, and the detection data detected by the predetermined detector as a graph on the display device;
A production control device of a corrugator characterized by having.   The traceability management control means further includes traceability information storage means for storing detection data indicating the operation state of each device and / or the state of the base paper as traceability information associated with the cumulative cut number M. Corrugator production control device as described.   The predetermined timing to be acquired by the detector data acquisition means and the predetermined detector are determined when the amount of change in detection data in the predetermined detector acquired by the detector data acquisition means exceeds a predetermined threshold value The production control device for a corrugator according to claim 1 or 2, which is the timing of and the detector thereof.   The display control means, when the change amount of the detection data does not exceed a predetermined threshold value, the value of the detection data at the latest time when the change amount of the detection data exceeds the predetermined threshold value The corrugator according to claim 3, wherein the traceability graph is displayed on the display device by linearly linking the detection data value at the next time point when the change amount of the detection data exceeds a predetermined threshold value. Production control device.   The production control device for a corrugator according to claim 1 or 2, wherein the predetermined timing to be acquired by the detector data acquisition means is a predetermined time interval based on a cutting interval by the cutter device.   The plurality of devices provided on the upstream side of the cutter device in the corrugator include a base paper hook, a splicer, a single facer, a corrugator bridge, a brake stand, a preheater, a glue machine, a double facer, and a slitter scorer. The production control device for corrugator according to any one of 5.

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